I was recently fixing an iPhone and the new LCD connector just wouldn’t pop on. Initially I thought I was shipped the wrong part but did not discover until I found the following image that it was the correct part and the person who’s iPhone I was fixing had actually given me the wrong model when I asked them which it was.

Unfortunately I could not find a higher resolution photo of this. So after clicking the image use Ctrl+ and Ctrl- to zoom in/out and get a better look at the differences.